Heavy-Duty Diesel Engine Repair Services in Tyler, TX

Struggling with diesel engine problems? Hex 6 Diesel Services in Tyler, TX, is your solution for expert engine repairs, rebuilds, overhauls, and conversions. We ensure your heavy-duty vehicles are always road-ready.

Diesel mechanic performing engine repair on a semi truck in Tyler, TX

What Is the Lifespan of a Diesel Engine?

Typically, a well-maintained diesel engine can last between 500,000 and 1,000,000 miles. However, it is possible to extend its longevity with a range of factors, including regular maintenance, quality of parts, and operating conditions.

Signs of Engine Failure

To ensure your diesel engine's performance on the road, it's crucial to recognize the signs of engine failure. Identifying these symptoms early can help prevent extended downtime further down the road. Be on the lookout for:

Excessive Smoke: Different smoke colors can indicate various issues. Black smoke often points to incomplete combustion, while blue smoke suggests oil burning in the combustion chamber.

Unusual Noises: Knocking or rattling sounds can signify issues within the engine’s internal components.

Loss of Power: A gradual loss of power, especially under load, can indicate compression issues or other internal problems.

Poor Fuel Economy: A sudden decrease in fuel efficiency can be a telltale sign of engine troubles.

Engine Overheating: Persistent overheating might signal a malfunction in the cooling system or internal engine damage.

Oil Leaks: Oil spots under your truck could indicate a leak, which can lead to low oil pressure and engine damage.

Difficulty Starting: Persistent hard starts or irregular running could be a symptom of compression or fuel delivery issues.

Diesel Engine Repair in Tyler, TX

At Hex 6 Diesel Services, we understand the complexities of heavy-duty diesel engines. Our team of expert mechanics is equipped to diagnose and repair various engine issues, ensuring your vehicle operates efficiently and reliably. We pride ourselves on our detailed approach, using only high-quality parts and the latest diagnostic tools.

Whether your truck requires minor repairs or a complete engine overhaul, Hex 6 Diesel Services is your go-to destination in Tyler, TX. We specialize in engine rebuilds, overhauls, and even conversions, tailoring our services to meet your specific needs.

Types of Vehicles We Work On 

Our highly skilled team is also able to carry out engine repairs on a range of on- and off-highway vehicles, including: 

  • Oil and gas industry equipment 
  • Agriculture equipment 
  • Municipality vehicles 
  • Heavy equipment
  • Commercial on-highway trucks, trailers and tankers
  • RVs and buses
  • Diesel trucks

FAQs

What Causes Excessive Blow-By in a Heavy-Duty Diesel Engine?

Excessive blow-by can develop when piston rings, cylinder walls, or related internal components wear enough to let combustion gases escape into the crankcase. Testing crankcase pressure and reviewing oil consumption can help determine whether internal engine wear is becoming significant.

Why Is My Diesel Engine Knocking After It Reaches Operating Temperature?

A knock that appears after warm-up may involve injector performance, combustion timing, bearing wear, oil pressure, or another temperature-sensitive condition. Because the symptom changes with heat, technicians may need to compare cold and hot engine data before identifying the source.

What Causes a Heavy-Duty Diesel Engine to Use Too Much Oil?

High oil consumption may come from worn piston rings, valve guide issues, turbocharger leakage, external leaks, or excessive crankcase pressure. Tracking consumption and inspecting where the oil is entering or leaving the engine helps distinguish internal wear from another repairable cause.

What Causes Low Compression in a Heavy-Duty Diesel Engine?

Low diesel engine compression can result from worn rings, damaged pistons, leaking valves, cylinder wear, or head-sealing problems. Compression or cylinder leak testing helps identify where pressure is escaping so technicians can determine which internal components require further inspection.

How Do You Get to Hex 6 in Tyler?

Truck and equipment owners visiting Hex 6 for engine repair and rebuild can find the shop at 5406 FM 850, Tyler, TX 75705. Major roads around Tyler provide access to FM 850 on the northeast side of the city. Drivers arriving from I-20 can take US-271 south toward Tyler before connecting with local roads leading to FM 850. Traffic coming from central Tyler can follow Loop 323 to US-271, then continue northeast toward the Hex 6 area.

Take the connecting roads to FM 850 and continue toward Hex 6. A nearby Shell gas station provides a useful reference point as drivers approach. Hollywood Door of Tyler is another business in the area that may help drivers recognize their surroundings.

Areas Also Serve For Engine Repairs in Texas

As well as Tyler, TX, we also proudly bring our engine repair service to the following surrounding areas, Longview, TX, Kilgore, TX, Jacksonville, TX, Henderson, TX, Athens, TX, Palestine, TX, Sulphur Springs, TX, Marshall, TX, Nacogdoches, TX, Lufkin, TX, Corsicana, TX, Dallas, TX, Plano, TX, Garland, TX, Mesquite, TX, Terrell, TX, Greenville, TX, Mount Pleasant, TX, and Paris, TX.

Repair

Heavy-Duty Truck & Equipment Repair Services

From engine rebuilds and axle & brake repairs to hydraulic systems, EGR/DPF, diagnostics, welding & fabrication, and undercarriage work - Hex 6 handles the full scope of heavy-duty diesel repair. Our technicians are experienced across semi-trucks, construction equipment, agricultural machinery, oil & gas equipment, and municipal vehicles. Whatever your equipment runs on diesel, we can fix it.

Our Customer Reviews

See what our recent customers are saying about our services.

Cannot say enough good things about Caleb and the crew here. I travel for work and the rig is what gets me there. Although they couldn’t fix my issue within my tight schedule they still diagnosed everything and gave me good info about where to safely bunk down until my company brings another vehicle in. If I ever find myself in this part of Texas with an issue again - I know who I’m calling.
Hex 6 is resourceful and helpful! We were on a summer road trip when our camper’s suspension broke on the interstate, leaving us stranded and needing to stay overnight in Tyler. Hex 6 provided useful information during a challenging time even when they didn’t have the part. We truly appreciated the assistance and support. Thank you for helping us get back on the road!
Great people and great service. They were able to find the part i needed at a reasonable price. Very efficient service got me in and out quick. Will definitely go there again. Highly recommend.
Great job fixing our truck and excellent communication,
I'm very happy with the service I received from Hex 6 I highly recommend this shop.
Great shop to have your vehicle truck or pick up what ever you drive this is the shop for you experience knowledgeable professional and hardly no down time excellent work and the people in Tyler Texas are so awesome courteous and help you threw the whole process all the personal at the shop great people thank you so much for all your help.
Second repair to my 30HP Kubota at Hex6. Axle issue first and steering second. Timing was good to complete considering their shop load. Cost in line or better than other options. Good staff. Most pleased overall.
Wow, what a great Company. Caleb was in constant contact and the bill came out much less than the estimate! The technician was on time, very knowledgeable and the job was done quickly. I will use them every time for my tractor work! Thanks Hex 6!
Hex 6 did a great job on my work truck. They did a full in frame rebuild. The service was fast and my truck has never run better. I took it back for regular schedule PM and they had me in and out the next day. Will only use them moving forward!!

Contact HEX 6

Hex 6 serves Tyler, TX and the surrounding East Texas area from our 36-bay shop and a fleet of mobile service trucks - available for scheduled maintenance, emergency roadside assistance, and on-site repairs for trucks, trailers, and equipment. Can't bring it to us? We'll come to you.